Across the world, archaeologists keep stumbling on structures so old, so large and so technically sophisticated that they seem to have no right to exist in the eras that produced them. From submerged ...

Throughout history, humanity has demonstrated an insatiable desire to build bigger, reach higher, and create structures that seem to defy the laws of physics ...

A group of researchers have identified at least seven stars that might be surrounded by advanced alien mega-structures known as "dyson spheres." NBC News' Ellison Barber speaks with Janna Levin, a ...

(CNN) — Archaeologists working in Saudi Arabia and Jordan say they have discovered the oldest known architectural plans. The “extremely precise depictions” engraved on stone slabs detail huge ...